Raise your hand if you know everything you've stuffed into your wallet (no peeking!). No? Then it's time to do a wallet audit or inventory to make your life a lot less hellish if your wallet ever gets lost or stolen.

Donna Freedman writes on Get Rich Slowly about being mugged and realizing the ton of things she had in her wallet, now gone. Take ten minutes now to make a list of what's in your wallet and the 800 number for each credit card (don't write down the card number). Obviously, keep that list outside of your wallet, perhaps stored in a Google Doc or previously noted webapp designed for this job, Wallet Garden. When your wallet goes missing, you can cancel all your cards immediately—before thieves have a chance to use them. Make a note, also, of the recurring payments associated with each card, because you'll have to redo them.

Credit cards have a phone number on them to call if your card is stolen, but it's kind of…
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Freedman offers lots more tips on doing a wallet audit, including keeping only the cards you need in your wallet and masking the numbers on your health insurance card (make a photocopy and Sharpie-out the last four digits).